26 Questions
Which of the following statements about vitamins is true?
Vitamins enable the body to use the energy provided by carbohydrates, fats, and proteins.
Who is inclined to vitamin deficiencies according to the text?
Alcoholics, the poor, and incapacitated elderly individuals.
How are vitamins commonly grouped according to solubility?
A, D, E, and K are fat-soluble, while B complex and C are water-soluble.
What are provitamins according to the text?
Substances from which the body can synthesize a specific vitamin.
What type of individuals may experience deficiencies of fat-soluble vitamins according to the text?
Patients with chronic malabsorption diseases such as cystic fibrosis.
Why should vitamins not be overused according to the text?
Because megadoses of vitamins can be toxic.
Which of the following vitamins is not fat-soluble?
Vitamin C
What is the active form of vitamin A?
Retinol
How are fat-soluble vitamins transported through the blood?
By lipoproteins
What are the best sources of beta-carotene?
Carrots and sweet potatoes
What is the preferred way to obtain the required amounts of vitamin A?
Well-balanced diet
What symptoms may indicate hypervitaminosis A?
Bone and joint pain
What does avitaminosis A result in?
Night blindness and dry skin
How are fat-soluble vitamins lost when mineral oil is ingested?
They bind to the mineral oil and are excreted in feces
What is the role of antioxidants in protecting cells from free radicals?
They neutralize free radicals and stop their chain reaction
What happens to the symptoms of hypervitaminosis A when excessive intake is discontinued?
They tend to disappear
What is the term for the condition characterized by dry, lusterless, mucous membranes of the eye due to vitamin A deficiency?
Xerophthalmia
Which of the following symptoms may indicate hypervitaminosis A?
Birth defects and liver damage
What is the active form of vitamin A?
Retinol
How are fat-soluble vitamins transported through the blood?
By lipoproteins
What is the term for atoms or groups of atoms with an odd (unpaired) number of electrons that can start a chain reaction and cause cellular damage?
Free radicals
Which of the following correctly describes the role of vitamins in providing energy?
Vitamins help the body use the energy from carbohydrates, fats, and proteins
What is the primary reason for not overusing vitamins according to the text?
Megadoses of vitamins can be toxic
In which of the following diseases are deficiencies of fat-soluble vitamins most likely to occur?
Cystic fibrosis
What are provitamins according to the text?
Substances from which the body can synthesize specific vitamins
Which group of vitamins is water-soluble?
B complex and C
Learn about the essential organic compounds, vitamins, which are required in small amounts for body processes. Understand how vitamins enable the body to use energy from carbohydrates, fats, and proteins and the potential risks of overuse. Explore the variations in types and amounts of vitamins found in foods.
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